TMZ says it's learned Debbie Reynolds suffered a medical emergency, which could be a possible stroke.
Reynolds was at her son Todd Fisher's home in Beverly Hills and just after 1 PM someone from the house called 911.
TMZ says it was told 84-year-old Debbie, whose daughter, Carrie, died Tuesday, has been distraught since Carrie's emergency Friday on a United jet.
Family sources called 911 to report a possible stroke.
Reynolds was at Todd's house discussing funeral plans for Carrie.